My left arm and leg feel slightly numb. The feeling began this morning on the underside of my upper left arm. It felt slightly sore, so I figured I had just slept on it the wrong way. Now, about 14 hours later, I am noticing the feeling in my left leg as well. Its not painful, just noticeable. Any ideas about whether this is something I should get checked out immediately or is likely to be something that can wait?